<?php
/*
ThinkPHP5.0+整合百度编辑器Ueditor1.4.3.3+
作者：符工@邦明
日期：西元二零一七年元月五日
网址：http://bbs.df81.com/
不要怀念哥，哥只是个搬运工
*/
namespace app\bussiness\controller;
use think\Controller;
use think\Image;
use think\Request;
class Ueditor extends Controller
{

    protected function _initialize()
    {
        if (!session("?H_BUSSINESS_LOGIN_USER") || session("H_BUSSINESS_DUE_TIME") < time())
        {
            session("H_BUSSINESS_REFERER", url("Index/index"));

            //判断是否为ajax操作
            if (request()->isAjax())
            {
                die(json_encode(array(
                    'state'=>'登录过期'
                )));
            }
            else
            {
                die("<script>if (window.parent){window.parent.location.href='"
                    . url("Login/index") . "';}else{location.href='"
                    . url("Login/index") . "';}</script>");
            }
        }
    }

    public function index()
    {
        //设置http://www.baidu.com允许跨域访问
        header('Access-Control-Allow-Origin: http://www.baidu.com');
        //设置允许的跨域header
        header('Access-Control-Allow-Headers: X-Requested-With,X_Requested_With');

        error_reporting(E_ERROR);
        header("Content-Type: text/html; charset=utf-8");

        //配置文件路径
        $configFile = APP_PATH . "/../public/static/vendors/ueditor/php/config.json";
        //加载配置参数
        $config = json_decode(preg_replace("/\/\*[\s\S]+?\*\//", "", file_get_contents($configFile)), true);

        //获取当前操作
        $action = $_GET['action'];

        //根据当前操作执行相关动作
        switch ($action)
        {
            //获取当前配置
            case 'config':
                $result = json_encode($config);
                break;
            /* 上传图片 */
            case 'uploadimage':
                $fieldName = $config['imageFieldName'];
                $result = $this->uploadFile($fieldName, "images", $config["imageMaxSize"]);
                break;
            /* 上传涂鸦 */
            case 'uploadscrawl':
                $fieldName = $config['scrawlFieldName'];
                $config = array(
                    "pathFormat" => $config['scrawlPathFormat'],
                    "maxSize" => $config['scrawlMaxSize'],
                    "allowFiles" => $config['scrawlAllowFiles'],
                    "oriName" => "scrawl.png"
                );
                $base64 = "base64";
                $result = $this->uploadScrawl($config,$fieldName);
                break;
            /* 上传视频 */
            case 'uploadvideo':
                $fieldName = $config['videoFieldName'];
                $result = $this->uploadFile($fieldName, "videos", $config["videoMaxSize"]);
                break;
            /* 上传文件 */
            case 'uploadfile':
                $fieldName = $config['fileFieldName'];
                $result = $this->uploadFile($fieldName, "files", $config["fileMaxSize"]);
                break;
            /* 列出图片 */
            case 'listimage':
                $allowFiles = $config['imageManagerAllowFiles'];
                $listSize = $config['imageManagerListSize'];
                $path = $config['imageManagerListPath'];
                $get =$_GET;
                $result =$this->fileList($allowFiles,$listSize,$get);
                break;
            /* 列出文件 */
            case 'listfile':
                $allowFiles = $config['fileManagerAllowFiles'];
                $listSize = $config['fileManagerListSize'];
                $path = $config['fileManagerListPath'];
                $get = $_GET;
                $result = $this->fileList($allowFiles,$listSize,$get);
                break;
            /* 抓取远程文件 */
            case 'catchimage':
                $config = array(
                    "pathFormat" => $config['catcherPathFormat'],
                    "maxSize" => $config['catcherMaxSize'],
                    "allowFiles" => $config['catcherAllowFiles'],
                    "oriName" => "remote.png"
                );
                $fieldName = $config['catcherFieldName'];
                /* 抓取远程图片 */
                $list = array();
                isset($_POST[$fieldName]) ? $source = $_POST[$fieldName] : $source = $_GET[$fieldName];

                foreach($source as $imgUrl){
                    $info = json_decode($this->saveRemote($config,$imgUrl),true);
                    array_push($list, array(
                        "state" => $info["state"],
                        "url" => $info["url"],
                        "size" => $info["size"],
                        "title" => htmlspecialchars($info["title"]),
                        "original" => htmlspecialchars($info["original"]),
                        "source" => htmlspecialchars($imgUrl)
                    ));
                }
                $result = json_encode(array(
                    'state' => count($list) ? 'SUCCESS':'ERROR',
                    'list' => $list
                ));
                break;
            default:
                $result = json_encode(array(
                    'state' => '请求地址出错'
                ));
                break;
        }
        /* 输出结果 */
        if(isset($_GET["callback"])){
            if(preg_match("/^[\w_]+$/", $_GET["callback"])){
                die(htmlspecialchars($_GET["callback"]).'('.$result.')');
            }else{
                die(json_encode(array(
                    'state' => 'callback参数不合法'
                )));
            }
        }else{
            die($result);
        }
    }

    //上传文件
    private function uploadFile($fieldName, $subPath, $maxSize)
    {
        $file = request()->file($fieldName);

        //判断文件大小
        if (!$file->checkSize($maxSize))
        {
            return json_encode(array("state"=>translate("Ueditor-uploadFile:too_max")));
        }

        //保存路径
        $savePath = config("upload_path") . '/' . $subPath;

        //移动文件
        $info = $file
            ->rule("upload_save_name")
            ->move($savePath);

        if($info)
        {
            //上传成功
            $fileName = "/uploads/" . $subPath . '/' . $info->getSaveName();

            $imgArr = explode(',', 'jpg,gif,png,jpeg,bmp,ttf,tif');
            $imgExt= strtolower($info->getExtension());
            $isImg = in_array($imgExt,$imgArr);

//            if($isImg){//如果是图片，开始处理
//                $image = Image::open($savePath . '/' . $info->getSaveName());
//                $thumbnail = 1;
//                $water = 1;
//
//                //在这里你可以根据你需要，调用ThinkPHP5的图片处理方法了
//                if($water == 1){//文字水印
//                    $image->text('df81.com','./public/font/4.ttf',180,'#ff0000')->save('.'.$fileName);
//                }
//                if($water ==2 ){//图片水印
//                    $image->water('./public/img/df81.png',9,100)->save('.'.$fileName);
//                }
//                if($thumbnail == 1){//生成缩略图
//                    $image->thumb(500,500,1)->save('.'.$fileName);
//                }
//            }

            $data=array(
                'state' => 'SUCCESS',
                'url' => $fileName,
                'title' => $info->getFilename(),
                'original' => $info->getFilename(),
                'type' => '.' . $info->getExtension(),
                'size' => $info->getSize(),
            );
        }
        else
        {
            $data=array(
                'state' => $info->getError(),
            );
        }
        return json_encode($data);
    }

    //列出图片
    private function fileList($allowFiles,$listSize,$get){
        $dirname = "./uploads";
        $allowFiles = substr(str_replace(".","|",join("",$allowFiles)),1);
        /* 获取参数 */
        $size = isset($get['size']) ? htmlspecialchars($get['size']) : $listSize;
        $start = isset($get['start']) ? htmlspecialchars($get['start']) : 0;
        $end = $start + $size;
        /* 获取文件列表 */
        $path = $dirname;
        $files = $this->getFiles($path,$allowFiles);
        if(!count($files)){
            return json_encode(array(
                "state" => "no match file",
                "list" => array(),
                "start" => $start,
                "total" => count($files)
            ));
        }
        /* 获取指定范围的列表 */
        $len = count($files);
        for($i = min($end, $len) - 1, $list = array(); $i < $len && $i >= 0 && $i >= $start; $i--){
            $list[] = $files[$i];
        }
        /* 返回数据 */
        $result = json_encode(array(
            "state" => "SUCCESS",
            "list" => $list,
            "start" => $start,
            "total" => count($files)
        ));
        return $result;
    }
    /*
  * 遍历获取目录下的指定类型的文件
  * @param $path
  * @param array $files
  * @return array
 */
    private function getFiles($path,$allowFiles,&$files = array()){
        if(!is_dir($path)) return null;
        if(substr($path,strlen($path)-1) != '/') $path .= '/';
        $handle = opendir($path);

        while(false !== ($file = readdir($handle))){
            if($file != '.' && $file != '..'){
                $path2 = $path.$file;
                if(is_dir($path2)){
                    $this->getFiles($path2,$allowFiles,$files);
                }else{
                    if(preg_match("/\.(".$allowFiles.")$/i",$file)){
                        $files[] = array(
                            'url' => substr($path2,1),
                            'mtime' => filemtime($path2)
                        );
                    }
                }
            }
        }

        return $files;
    }
    //抓取远程图片
    private function saveRemote($config,$fieldName){
        $imgUrl = htmlspecialchars($fieldName);
        $imgUrl = str_replace("&amp;","&",$imgUrl);
        //http开头验证
        if(strpos($imgUrl,"http") !== 0){
            $data=array(
                'state' => '链接不是http链接',
            );
            return json_encode($data);
        }
        //获取请求头并检测死链
        $heads = get_headers($imgUrl);
        if(!(stristr($heads[0],"200") && stristr($heads[0],"OK"))){
            $data=array(
                'state' => '链接不可用',
            );
            return json_encode($data);
        }
        //格式验证(扩展名验证和Content-Type验证)
        $fileType = strtolower(strrchr($imgUrl,'.'));
        if(!in_array($fileType,$config['allowFiles']) || stristr($heads['Content-Type'],"image")){
            $data=array(
                'state' => '链接contentType不正确',
            );
            return json_encode($data);
        }
        //打开输出缓冲区并获取远程图片
        ob_start();
        $context = stream_context_create(
            array('http' => array(
                'follow_location' => false // don't follow redirects
            ))
        );
        readfile($imgUrl,false,$context);
        $img = ob_get_contents();
        ob_end_clean();
        preg_match("/[\/]([^\/]*)[\.]?[^\.\/]*$/",$imgUrl,$m);
        $dirname = './public/uploads/remote/';
        $file['oriName'] = $m ? $m[1] : "";
        $file['filesize'] = strlen($img);
        $file['ext'] = strtolower(strrchr($config['oriName'],'.'));
        $file['name'] = uniqid().$file['ext'];
        $file['fullName'] = $dirname.$file['name'];
        $fullName = $file['fullName'];
        //检查文件大小是否超出限制
        if($file['filesize'] >= ($config["maxSize"])){
            $data=array(
                'state' => '文件大小超出网站限制',
            );
            return json_encode($data);
        }
        //创建目录失败
        if(!file_exists($dirname) && !mkdir($dirname,0777,true)){
            $data=array(
                'state' => '目录创建失败',
            );
            return json_encode($data);
        }else if(!is_writeable($dirname)){
            $data=array(
                'state' => '目录没有写权限',
            );
            return json_encode($data);
        }
        //移动文件
        if(!(file_put_contents($fullName, $img) && file_exists($fullName))){ //移动失败
            $data=array(
                'state' => '写入文件内容错误',
            );
            return json_encode($data);
        }else{ //移动成功
            $data=array(
                'state' => 'SUCCESS',
                'url' => substr($file['fullName'],1),
                'title' => $file['name'],
                'original' => $file['oriName'],
                'type' => $file['ext'],
                'size' => $file['filesize'],
            );
        }

        return json_encode($data);
    }

    //上传涂鸦文件
    private function uploadScrawl($config,$fieldName)
    {
        //解析图片数据
        $base64Data = $_POST[$fieldName];
        $img = base64_decode($base64Data);

        //涂鸦存储路径
        $subPath = "scrawls/" . date("m") . "/" . date("d") . "/" . date("Y");
        $savePath = config("upload_path") . '/' . $subPath;

        //文件大小
        $file['filesize'] = strlen($img);
        //文件原始名称
        $file['oriName'] = $config['oriName'];
        //文件扩展名
        $file['ext'] = strtolower(strrchr($config['oriName'],'.'));
        //文件名称
        $file['name'] = uniqid().$file['ext'];
        //文件完整名称
        $file['fullName'] = $savePath . '/' . $file['name'];

        //检查文件大小是否超出限制
        if($file['filesize'] >= ($config["maxSize"]))
        {
            return json_encode(array("state"=>translate("Ueditor-uploadScrawl:file_size_overrun")));
        }

        //创建目录失败
        if(!file_exists($savePath) && !mkdir($savePath,0777,true))
        {
            return json_encode(array("state"=>translate("Ueditor-uploadScrawl:create_dir_error")));
        }
        else if
        (!is_writeable($savePath))
        {
            return json_encode(array("state"=>translate("Ueditor-uploadScrawl:write_dir_error")));
        }

        //移动文件
        if(!(file_put_contents($file['fullName'], $img)
            && file_exists($file['fullName'])))
        {
            return json_encode(array("state"=>translate("Ueditor-uploadScrawl:write_file_error")));
        }
        else
        {
            //移动成功
            $fileName = "/uploads/" . $subPath . '/' . $file["name"];
            $data=array(
                'state' => 'SUCCESS',
                'url' => substr($fileName,1),
                'title' => $file['name'],
                'original' => $file['oriName'],
                'type' => $file['ext'],
                'size' => $file['filesize'],
            );

            return json_encode($data);
        }
    }

}